7 Envelope Generators and DCA
The Envelope Generator (EG) and Digitally Controlled Amplifier (DCA) are two common synth components found in most synth architectures. These two modules generate time-based amplitude change values. The EG renders a unipolar output value, which is applied as a modulation value to other modules. The DCA processes an input with gain and panning (left/right) multipliers; the SynthLab DCA processes stereo signals.
7.1 Envelope Generator Fundamentals
EGs are most commonly used to control the overall amplitude of the synthesized note-event – the time domain contour that the musician hears. Most EGs are documented with something like Figure 7.1(a), which shows an EG with attack, decay, sustain, and release (ADSR) ...
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